Ifpack_ReorderFilter: a class for light-weight reorder of local rows and columns of an Epetra_RowMatrix. More...

#include <Ifpack_ReorderFilter.h>

Inheritance diagram for Ifpack_ReorderFilter:

Public Member Functions
	Ifpack_ReorderFilter (const Teuchos::RefCountPtr< Epetra_RowMatrix > &Matrix_in, const Teuchos::RefCountPtr< Ifpack_Reordering > &Reordering_in)

	Ifpack_ReorderFilter (const Ifpack_ReorderFilter &RHS)
	Copy constructor. More...

virtual	~Ifpack_ReorderFilter ()
	Destructor. More...

Ifpack_ReorderFilter &	operator= (const Ifpack_ReorderFilter &RHS)
	Operator assignment. More...

virtual int	NumMyRowEntries (int MyRow, int &NumEntries) const
	Returns the number of local row entries. More...

virtual int	MaxNumEntries () const
	Returns maximum num entries. More...

virtual int	ExtractMyRowCopy (int MyRow, int Length, int &NumEntries, double Values, int Indices) const

virtual int	ExtractDiagonalCopy (Epetra_Vector &Diagonal) const
	Extracts a copy of the diagonal of the reordered matrix. More...

virtual int	Multiply (bool TransA, const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
	Multiplies multi-vector X with the reordered matrix, returns result in Y. More...

virtual int	Solve (bool Upper, bool Trans, bool UnitDiagonal, const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
	Solve, not implemented. More...

virtual int	Apply (const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
	Applies the reordered matrix to multi-vector X, returns the result in Y. More...

virtual int	ApplyInverse (const Epetra_MultiVector &, Epetra_MultiVector &) const
	Applies the inverse of `this` operator (not implemented). More...

virtual int	InvRowSums (Epetra_Vector &) const
	Inverse of row sums (not implemented). More...

virtual int	LeftScale (const Epetra_Vector &)
	Left scale of the matrix (not implemented). More...

virtual int	InvColSums (Epetra_Vector &) const
	Inverse of column sums (not implemented). More...

virtual int	RightScale (const Epetra_Vector &)
	Right scale of the matrix (not implemented). More...

virtual bool	Filled () const
	Returns `true` is the matrix called FillComplete(). More...

virtual double	NormInf () const
	Returns the infinite-norm. More...

virtual double	NormOne () const
	Returns the 1-norm. More...

virtual int	NumGlobalNonzeros () const
	Returns the number of global nonzero elements. More...

virtual int	NumGlobalRows () const
	Returns the number of global rows. More...

virtual int	NumGlobalCols () const
	Returns the number of global columns. More...

virtual int	NumGlobalDiagonals () const
	Returns the number of global diagonals. More...

virtual long long	NumGlobalNonzeros64 () const
	Returns the number of global nonzero elements. More...

virtual long long	NumGlobalRows64 () const
	Returns the number of global rows. More...

virtual long long	NumGlobalCols64 () const
	Returns the number of global columns. More...

virtual long long	NumGlobalDiagonals64 () const
	Returns the number of global diagonals. More...

virtual int	NumMyNonzeros () const
	Returns the number of local nonzero elements. More...

virtual int	NumMyRows () const
	Returns the number of local rows. More...

virtual int	NumMyCols () const
	Returns the number of local columns. More...

virtual int	NumMyDiagonals () const
	Returns the number of local diagonals. More...

virtual bool	LowerTriangular () const
	Returns `true` is the reordered matrix is lower triangular. More...

virtual bool	UpperTriangular () const
	Returns `true` is the reordered matrix is upper triangular. More...

virtual const Epetra_Map &	RowMatrixRowMap () const
	Returns the row matrix of the non-reordered matrix. More...

virtual const Epetra_Map &	RowMatrixColMap () const
	Returns the column matrix of the non-reordered matrix. More...

virtual const Epetra_Import *	RowMatrixImporter () const
	Returns the importer of the non-reordered matrix. More...

int	SetUseTranspose (bool UseTranspose_in)
	Sets the use of the transpose. More...

bool	UseTranspose () const
	Returns `true` if the transpose of `this` matrix is used. More...

bool	HasNormInf () const
	Returns `true` if `this` matrix has the infinite norm. More...

const Epetra_Comm &	Comm () const
	Returns the communicator. More...

const Epetra_Map &	OperatorDomainMap () const
	Returns the operator domain map of the non-reordered matrix. More...

const Epetra_Map &	OperatorRangeMap () const
	Returns the operator domain range of the non-reordered matrix. More...

const Epetra_BlockMap &	Map () const
	Returns the map of the non-reordered matrix. More...

const char *	Label () const
	Returns the label of `this` object. More...

Teuchos::RefCountPtr < Epetra_RowMatrix >	Matrix () const
	Returns a reference-counted pointer to the internally stored pointer to Epetra_RowMatrix. More...

Teuchos::RefCountPtr < Ifpack_Reordering >	Reordering () const
	Returns a reference-counted pointer to the internally stored pointer to Ifpack_Reordering.. More...

Private Attributes
Teuchos::RefCountPtr < Epetra_RowMatrix >	A_
	Pointer to the matrix to be preconditioned. More...

Teuchos::RefCountPtr < Ifpack_Reordering >	Reordering_
	Pointer to the reordering to be used (already constructed). More...

int	NumMyRows_
	Number of local rows of A_. More...

int	MaxNumEntries_
	Maximum number of entries in A_. More...

char	Label_ [80]
	Label for `this` object. More...

Detailed Description

Ifpack_ReorderFilter: a class for light-weight reorder of local rows and columns of an Epetra_RowMatrix.

Class Ifpack_ReorderFilter enables a light-weight construction of reordered matrices.

This class is used in Ifpack_AdditiveSchwarz to reorder (if required by the user) the localized matrix. As the localized matrix is defined on a serial communicator only, all maps are trivial (as all elements reside on the same process). This class does not attemp to define properly reordered maps, hence it should not be used for distributed matrices.

To improve the performances of Ifpack_AdditiveSchwarz, some operations are not performed in the construction phase (like for instance the computation of the 1-norm and infinite-norm, of check whether the reordered matrix is lower/upper triangular or not).

Author: Marzio Sala, SNL 9214.

Date: Last modified: Oct-04.

Definition at line 81 of file Ifpack_ReorderFilter.h.

Constructor & Destructor Documentation

Ifpack_ReorderFilter::Ifpack_ReorderFilter	(	const Teuchos::RefCountPtr< Epetra_RowMatrix > &	Matrix_in,
		const Teuchos::RefCountPtr< Ifpack_Reordering > &	Reordering_in
	)

Definition at line 54 of file Ifpack_ReorderFilter.cpp.

Ifpack_ReorderFilter::Ifpack_ReorderFilter ( const Ifpack_ReorderFilter & RHS )

Copy constructor.

Definition at line 64 of file Ifpack_ReorderFilter.cpp.

virtual Ifpack_ReorderFilter::~Ifpack_ReorderFilter ( )

inlinevirtual

Destructor.

Definition at line 92 of file Ifpack_ReorderFilter.h.

Member Function Documentation

Ifpack_ReorderFilter & Ifpack_ReorderFilter::operator= ( const Ifpack_ReorderFilter & RHS )

Operator assignment.

Definition at line 75 of file Ifpack_ReorderFilter.cpp.

virtual int Ifpack_ReorderFilter::NumMyRowEntries	(	int	MyRow,
		int &	NumEntries
	)		const

inlinevirtual

Returns the number of local row entries.

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation